Daiichi Kosho customer data exposed after Daiichi Kosho breach
Data Leak
Summary
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Daiichi Kosho disclosed that a contractor malware incident at Nippon Columbia Group (NCG) may have exposed more than 8.7 million customer and employee records. The exposed dataset includes 93,000 employees and 8,631,000 customers across brands such as BIG ECHO and Karaoke CLUB DAM. The company says its own systems were not breached and that data theft is unconfirmed, but it is investigating whether the information was leaked online. The exposed fields include names, dates of birth, email addresses, and telephone numbers.
Related Happenings
Nippon Columbia Group (NCG) hit by data theft breach
Incident
H score60
First: 11.10.2026 17:23
Last: 11.10.2026 17:23
Sources 1
How related:
The record company informed Daiichi Kosho on October 5 that it had discovered malware on an employee’s computer and isolated the affected system the following day.
About this happening:
Nippon Columbia Group (NCG) suffered a malware infection on an employee computer, forcing isolation of the affected system and an investigation into possible downstrea...
Nippon Columbia Group (NCG) hit by data theft breach
IncidentHow related: The record company informed Daiichi Kosho on October 5 that it had discovered malware on an employee’s computer and isolated the affected system the following day.
About this happening: Nippon Columbia Group (NCG) suffered a malware infection on an employee computer, forcing isolation of the affected system and an investigation into possible downstrea...
Timeline
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11.10.2026 17:23 1 articles · 7h ago
Nippon Columbia detects malware on an employee computer
Detection Ioc UpdateNippon Columbia discovered malware on an employee’s computer on October 5 and informed Daiichi Kosho, marking the start of the contractor-side incident tied to personal information handling for the karaoke operator.
Show sources
- Nippon Columbia malware incident exposes 8.6 million karaoke fan records — www.bleepingcomputer.com — 11.10.2026 17:23
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11.10.2026 17:23 1 articles · 7h ago
Nippon Columbia isolates the affected system and resets credentials
Mitigation Patch UpdateOn the following day, Nippon Columbia isolated the affected system and Daiichi Kosho said the contractor reset passwords and other authentication credentials while it investigated the cause and scope of the incident and whether any data had been leaked online.
Show sources
- Nippon Columbia malware incident exposes 8.6 million karaoke fan records — www.bleepingcomputer.com — 11.10.2026 17:23
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11.10.2026 17:23 2 articles · 7h ago
Daiichi Kosho discloses exposure of 8.7 million customer and employee records
Initial DisclosureDaiichi Kosho disclosed that a malware infection at contractor Nippon Columbia exposed more than 8.7 million customer and employee records, including 93,000 employees and 8,631,000 customers. The company said its own systems were not breached, that no data theft or leaks had been confirmed, and that customers of BIG ECHO, MEGA BIG, Karaoke CLUB DAM, Banana Club, B-GARAGE, and DK Dining should remain cautious about unsolicited contact.
Show sources
- Nippon Columbia malware incident exposes 8.6 million karaoke fan records — www.bleepingcomputer.com — 11.10.2026 17:23
- Nippon Columbia malware incident exposes 8.6 million karaoke fan records — www.bleepingcomputer.com — 11.10.2026 17:23